Configuration With The Pc / Laptop Or Handheld Terminal - ABB 261GS Operating Instruction

7.7 Configuration with the PC / laptop or handheld
terminal
A graphical user interface (DTM) is required for configuration of
the transmitter via PC or laptop. For operating instructions,
please refer to the software description.
Further information:
Data sheet on DTM / SMART VISION or ASSET VISION BASIC
Communications protocol:
HART®
Hardware:
FSK modem for PC / notebook
HART handheld terminal (HHT):
e. g. 691 HT, HHT275/375, DHH800-MFC, DHH805
You can use a handheld terminal to read out or configure /
calibrate the transmitter. If a communication resistor is already
installed in the connected power supply unit, you can connect
the handheld terminal directly at any point along the
4 to 20 mA line.
If no communication resistor (min. 250 Ω) is present, you will
absolutely need to install one in the
line. The handheld terminal is connected between the resistor
and transmitter, not between the resistor and power supply
unit.
+
p
U
B
+
#
–
1
Fig. 22: Communication resistor in power supply unit
1 Transmitter | 2 Power supply unit
+
U
S
–
I + FSK
A
2
M10700
+
p
U
B
+ #
–
1
Fig. 23: Communication resistor in the connection lead)
1 Transmitter | 2 Power supply unit
If a handheld terminal or a PC is being used for
communication / configuration / parameterization in a
potentially explosive atmosphere with type of protection
"intrinsic safety", the devices used must be certified
accordingly.
This applies even if the device is only connected for a short
period of time. This proof of "intrinsic safety" must be supplied
in addition to the transmitter.
For additional information, refer to the operating instructions
included with the handheld terminal.
If the transmitter has been configured in the factory according
to customer specifications for the measuring point, all you
have to do is mount the transmitter as prescribed (to correct
potential zero shifts, refer to the section "Correcting the zero
shift"), and switch it on. The measuring point will now be ready
for use.
If the transmitter is equipped with an LCD indicator, the
current pressure/absolute pressure is displayed in % (factory
setting, unless otherwise specified).
If, however, you wish to make changes to the configuration, a
handheld terminal or - preferably - a graphical user interface
(DTM) is required.
This DTM tool can be used to configure the device fully. It
supports the HART protocol and runs on a PC or laptop, i.e.,
on an automated system.
Refer to the installation manual provided with the software for
the steps required to install the operating tool. The most
important parameters can be set under the path
"Configure_Pressure Measurement".
The program offers the option of configuring, polling, and
testing the transmitter. In addition, offline configuration can be
performed by means of an internal database. Each
configuration step is subject to a plausibility check. You can
call up context-sensitive help at any time by pressing the "F1"
key.
We recommend that you save the existing configuration data
on a separate data storage medium as soon as you receive
the transmitter or before you change the configuration. To do
this, select:
"File_Save".
min. 250 Ω
+
U
S
–
I + FSK
A
261Gx, 261Ax | IM/261Gx/Ax-EN Rev. 08 33
2
M10701